(19)
(11) EP 1 202 071 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.09.2002 Bulletin 2002/39

(43) Date of publication A2:
02.05.2002 Bulletin 2002/18

(21) Application number: 01125337.4

(22) Date of filing: 26.10.2001
(51) International Patent Classification (IPC)7: G01R 31/36, G01R 15/16, G01R 19/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 31.10.2000 JP 2000334026

(71) Applicants:
  • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Kadoma-shi, Osaka 571-8501 (JP)
  • TOYOTA JIDOSHA KABUSHIKI KAISHA
    Toyota-shi, Aichi 471-8571 (JP)

(72) Inventors:
  • Takada, Masahiro
    Toyohashi-shi, Aichi 431-0452 (JP)
  • Morimoto, Naohisa
    Toyohashi-shi, Aichi 440-0013 (JP)

(74) Representative: Balsters, Robert et al
Novagraaf SA 25, Avenue du Pailly
1220 Les Avanchets - Geneva
1220 Les Avanchets - Geneva (CH)

   


(54) Voltage measurement apparatus


(57) A voltage measurement apparatus is provided for measuring a voltage of each of N power sources connected in series. The apparatus includes N capacitance elements provided respectively corresponding to the N power sources, and connected in series, a first switching section for simultaneously applying a voltage of each power source to one of the N capacitance elements corresponding to said power source, a voltage measurement section for measuring a voltage of each capacitance element, and a second switching section for sequentially connecting each capacitance element to the voltage measurement section.






Search report